问题描述
我目前正在实现两个应用程序:一个通过TLS套接字连接与另一个服务器应用程序通信的客户端应用程序。服务器电话(Android 7.1)需要使用密码创建热点(可以在Android热点设置中进行设置)。如果我通过“ Android系统Wi-Fi面板”将客户端电话(Android 10)连接到热点,则此连接工作正常(在Wi-Fi上点按,选择热点,输入密码→已连接)。我的Socket连接可以建立-客户端和服务器可以通信。
客户电话报告说,此热点内没有可用的互联网,这是可以的,因为我不想访问其互联网连接。
但是现在,我想使用以下代码通过WifiManager和自己创建的WifiConfiguration直接连接到它,无需进入Android设置:
public static boolean saveAndConnectToWpaConfig(Context context,String ssidParam,String passphrase)
{
String ssidFormated = "\"" + ssidParam + "\"";
WifiConfiguration wifiConfiguration = new WifiConfiguration();
wifiConfiguration.SSID = ssidFormated;
wifiConfiguration.preSharedKey = "\"" + passphrase + "\"";
wifiConfiguration.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
try {
WifiManager wifiManager = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
int networkId;
if (wifiManager != null) {
for (WifiConfiguration wifi :wifiManager.getConfigurednetworks()) {
if(wifi.SSID.equals(ssidFormated)) {
wifiManager.removeNetwork(wifi.networkId);
break;
}
}
networkId = wifiManager.addNetwork(wifiConfiguration);
if (networkId != -1)
{
wifiManager.disconnect();
if(wifiManager.enableNetwork(networkId,true)) {
wifiManager.saveConfiguration();
return true;
}
}
}
} catch (Exception e) {
Logs.log(Logs.LogTypes.exception,"Can't connect to SSID: " + ssidParam,e);
}
return false;
}
一方面,此代码有效。我可以连接到热点,Android表示还可以。另一方面,尝试创建我的套接字连接现在导致createSocket()方法中的超时意外:
socket = SSLUtility.getSocketFactory().createSocket(ip,port);
例外:
java.net.ConnectException: Failed to connect to /192.168.43.1 (port 42223) from /:: (port 36660): connect Failed: ETIMEDOUT (Connection timed out)
at libcore.io.IoBridge.connect(IoBridge.java:143)
at java.net.PlainSocketImpl.socketConnect(PlainSocketImpl.java:142)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:390)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:230)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:212)
at java.net.socksSocketImpl.connect(SocksSocketImpl.java:436)
at java.net.socket.connect(Socket.java:621)
(SSLUtility构建了一个套接字工厂,但我认为在这种情况下这并不重要,因为当我通过“ Android系统Wifi面板”连接到Wifi时此代码已经可以使用了)
我检查了两个连接的配置文件:
通过“ Android系统Wifi面板”的工作热点连接:
ID: 99 SSID: "My_Hotsport_1234" PROVIDER-NAME: null BSSID: null FQDN: null PRIO: 16 HIDDEN: false PMF: false
NetworkSelectionStatus NETWORK_SELECTION_ENABLED
hasEverConnected: true
numAssociation 1
update millis:1601964892066
creation millis:1601964892066
trusted
macRandomizationSetting: 1
mRandomizedMacAddress: 02:00:00:00:00:00
KeyMgmt: WPA_PSK Protocols: WPA RSN
AuthAlgorithms: OPEN
PairwiseCiphers: TKIP CCMP
GroupCiphers: WEP40 WEP104 TKIP CCMP
GroupMgmtCiphers:
SuiteBCiphers:
PSK/SAE: *
Enterprise config:
eap NULL
phase2 "auth=NULL"
IP config:
IP assignment: DHCP
Proxy settings: NONE
cuid=1000 cname=android.uid.system:1000 luid=1000 lname=android.uid.system:1000 lcuid=1000 userApproved=USER_UNSPECIFIED noInternetAccessExpected=true
recentFailure: Association Rejection code: 0
samsungSpecificFlags:
semAutoWifiscore: 0
isvendorAp : false
recoverableRSSI: -200
inRecoverArea: false
disabledTime: 0
notinRangeTime: 0
validatedInternetAccess: false
skipInternetCheck: -1
notAskAgainCheck: false
nextTargetRSSi: 0
isCaptivePortal: false
isAuthenticated: false
loginUrl: null
autoReconnect: 1
isRecommended: false
isHomeProviderNetwork: false
WapiCertIndex: 0
WapiPskType: 0
isWeChatAp : false
semmhsUserName :
entryRSSi24GHz : -78
entryRSSi5GHz : -75
以编程方式创建的热点连接:
ID: 100 SSID: "My_Hotsport_1234" PROVIDER-NAME: null BSSID: null FQDN: null PRIO: 17 HIDDEN: false PMF: false
NetworkSelectionStatus NETWORK_SELECTION_ENABLED
hasEverConnected: true
numAssociation 1
numNoInternetAccessReports 1
update millis:1601965132465
creation millis:1601965132465
trusted
macRandomizationSetting: 1
mRandomizedMacAddress: 02:00:00:00:00:00
KeyMgmt: WPA_PSK WPA_EAP Protocols: WPA RSN
AuthAlgorithms: OPEN
PairwiseCiphers: TKIP CCMP
GroupCiphers: WEP40 WEP104 TKIP CCMP
GroupMgmtCiphers:
SuiteBCiphers:
PSK/SAE: *
Enterprise config:
eap NULL
phase2 "auth=NULL"
IP config:
IP assignment: DHCP
Proxy settings: NONE
cuid=10463 cname=com.myCompany.myAppName luid=10463 lname=com.myCompany.myAppName lcuid=10463 userApproved=USER_UNSPECIFIED noInternetAccessExpected=false
recentFailure: Association Rejection code: 0
samsungSpecificFlags:
semAutoWifiscore: 0
isvendorAp : false
recoverableRSSI: -200
inRecoverArea: false
disabledTime: 0
notinRangeTime: 0
validatedInternetAccess: false
skipInternetCheck: -1
notAskAgainCheck: false
nextTargetRSSi: 0
isCaptivePortal: false
isAuthenticated: false
loginUrl: null
autoReconnect: 1
isRecommended: false
isHomeProviderNetwork: false
WapiCertIndex: 0
WapiPskType: 0
isWeChatAp : false
semmhsUserName :
entryRSSi24GHz : -78
entryRSSi5GHz : -75
两个区别是:
现在我的问题:
- 是否甚至可以创建到Android系统未添加的Hotspot的TLS套接字连接?
- 还是应该起作用,我需要在配置文件中手动设置“ no internet”标志?
- 我是否想念配置中的其他内容?我尝试设置不同的算法和密钥管理,但没有成功。
- 如何记录创建套接字的SSL输出?在“正常” Java应用程序中,我可以添加JVM标志
-Djavax.net.debug=all
来获取输出,在Android中这怎么可能?
我认识到将打开一个Android对话框,当我在“ Android设置”中连接到该热点时,通知该热点没有互联网连接。使用我自己创建的配置,它将不会显示。
解决方法
最后我明白了。问题确实出在那行:
cuid=10463 cname=com.myCompany.myAppName luid=10463 lname=com.myCompany.myAppName lcuid=10463 userApproved=USER_UNSPECIFIED noInternetAccessExpected=false
但这与添加热点的用户(我的应用程序或Android系统)无关,是noInternetAccessExpected
字段。不幸的是,手动连接热点不会触发“不再询问”对话框(仅在我的情况下?),该对话框表明该热点内没有可用于设置此字段的互联网。我通过从adb shell ping服务器来发现它。在关闭对话框之前,没有销钉返回,在关闭对话框之后,它仍然起作用。
但是您不能在配置文件中设置该字段,因为它没有getter / setter->闻起来像反射是必须的:
String ssidFormated = "\"" + ssidParam + "\"";
WifiConfiguration wifiConfiguration = new WifiConfiguration();
wifiConfiguration.SSID = ssidFormated;
wifiConfiguration.preSharedKey = "\"" + passphrase + "\"";
wifiConfiguration.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
wifiConfiguration.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
try {
Field fieldname = WifiConfiguration.class.getField("noInternetAccessExpected");
if(fieldname != null) {
fieldname.set(wifiConfiguration,true);
}
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (NoSuchFieldException e) {
e.printStackTrace();
}
还有voir la-这就是窍门。我认为通常该对话框会弹出,但就我而言,它没有...
希望这可以帮助某人!